Hey!! I used to play a Stage Lead in high school (the school band owned one). If it's the one I'm thinking about, it's a relatively tall open-back combo with the 2 speakers mounted *diagonally* in the enclosure (thus explaining the tall height). The side-profile is skinny, possibly even tapered towards the top. It's solid state, the one I played had the dark red/black color scheme with (I think) a white power switch. This was not a bad amp. The distortion was not too shabby for a SS amp...then again, I may have had relatively uninitiated ears!! I'd like to play it again just for nostalgia purposes.
BTW, I had an underclassmen friend who later blew that same amp I played when he was going through the music program.
Good luck!!